Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3415658160

Certificate GIA 3415658160

Diamond specifications and retailer prices

From $7,710 USD
As of October 29, 2026
Save $12,716 USD (62%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $20,426 USD at Diamond Quarter · As of October 28, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3415658160. Listed at 27 retailers as of October 28, 2026, with prices from $7,710 to $20,426, a $12,716 spread on the same certified stone. Diamond Quarter lists it at $20,426. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 3415658160
Dimensions7.34 × 7.30 × 4.59 mm
L/W Ratio1.01
Top View
7.34 mm7.30 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3415658160
Side View
Table 55.0%Crown 33.5°Girdle: ThickPavilion 41.4°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $9,240 USD|Low: $7,710 USD|High: $16,419 USD|Avg: $11,368 USD|-13.8%
Retailer 1
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Retailer 3
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Retailer 11
Retailer 12
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Retailer 22
Retailer 23
October 29, 2026
Retailer 5$7,710 USD
Retailer 7$7,751 USD
Retailer 3$7,996 USD
Retailer 21$8,132 USD
Retailer 8$8,234 USD
Retailer 19$8,485 USD
Retailer 6$8,540 USD
Retailer 4$9,104 USD
Retailer 1$9,240 USD
Retailer 12$9,488 USD
Retailer 22$9,558 USD
Retailer 9$9,910 USD
Retailer 23$9,910 USD
Retailer 2$10,240 USD
Retailer 20$10,362 USD
Retailer 18$10,629 USD
Retailer 15$10,672 USD
Retailer 13$10,837 USD
Retailer 11$10,949 USD
Retailer 14$12,314 USD
Retailer 17$13,410 USD
Retailer 10$14,299 USD
Retailer 16$16,419 USD

42 data points across 23 retailers

27 retailers$7,710 USD to $20,426 USD

A
Cheapest Retailer
-
$7,710 USD
A
Retailer 2
-
$7,751 USD
View
A
Retailer 3
-
$7,996 USD
View
A
Retailer 4
-
$8,132 USD
View
A
Retailer 5
-
$8,234 USD
View
A
Retailer 6
-
$8,485 USD
View
B+
Retailer 7
-
$8,540 USD
View
Final sale: no returns
B+
Retailer 8
-
$9,104 USD
View
B+
Retailer 9
-
$9,240 USD
£7,276 GBP
View
B+
Retailer 10
-
$9,488 USD
View
B+
Retailer 11
-
$9,558 USD
View
B+
Retailer 12
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$9,851 USD
View
Price last confirmed 13 days ago
B+
Retailer 13
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$9,910 USD
View
B+
Retailer 14
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$9,910 USD
View
B+
Retailer 15
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$10,240 USD
View
B+
Retailer 16
-
$10,362 USD
View
B+
Retailer 17
-
$10,629 USD
€10,123 EUR
View
B
Retailer 18
-
$10,672 USD
View
Price last confirmed 7 days ago
B+
Retailer 19
-
$10,837 USD
View
B+
Retailer 20
-
$10,949 USD
A$16,844 AUD
View
Price last confirmed 25 days ago
B+
Retailer 21
-
$10,976 USD
View
Price last confirmed 14 days ago
B
Retailer 22
-
$12,314 USD
View
Price last confirmed 8 days ago
B
Retailer 23
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$13,410 USD
£10,559 GBP
View
B
Retailer 24
-
$14,299 USD
ZAR 231,006 ZAR
View
Price last confirmed 11 days ago
B
Retailer 25
-
$16,419 USD
View
Price last confirmed 8 days ago
B
Retailer 26
-
$19,485 USD
£15,343 GBP
View
Most Expensive
B
Diamond Quarter
1.51SI1D34607BA3N · Oct 28
$20,426 USD
£16,083 GBP
View
26 more retailers have this diamond
Prices start from $7,710 USDSave up to $12,716 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$7,710 USD