Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2558023581

Certificate GIA 2558023581

Diamond specifications and retailer prices

From $8,584 USD
As of October 25, 2026
Save $6,290 USD (42%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $15,480 USD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 2558023581. Listed at 20 retailers as of October 25, 2026, with a 73% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2558023581
Dimensions7.25 × 7.29 × 4.56 mm
L/W Ratio1.01
Top View
7.25 mm7.29 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558023581
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
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 25
Current: $11,947 USD|Low: $8,064 USD|High: $14,874 USD|Avg: $10,329 USD|+4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 8$8,064 USD
Retailer 3$8,584 USD
Retailer 7$8,709 USD
Retailer 10$9,008 USD
Retailer 2$9,166 USD
Retailer 4$9,703 USD
Retailer 16$9,754 USD
Retailer 5$10,120 USD
Retailer 12$10,266 USD
Retailer 9$10,270 USD
Retailer 15$10,385 USD
Retailer 18$10,512 USD
Retailer 14$11,388 USD
Retailer 17$11,656 USD
Retailer 6$11,886 USD
Retailer 1$11,947 USD
Retailer 13$13,991 USD
Retailer 11$14,874 USD

27 data points across 18 retailers

20 retailers$8,584 USD to $14,874 USD

Retailer 1
-
$8,064 USD
HK$63,000 HKD
Price last confirmed 8 days ago
A
Retailer 2
-
$8,584 USD
View
Retailer 3
-
$8,709 USD
View
Price last confirmed 10 days ago
Retailer 4
-
$9,008 USD
SGD 12,173 SGD
View
Price last confirmed 21 days ago
Retailer 5
-
$9,166 USD
€8,730 EUR
View
Price last confirmed 8 days ago
Retailer 6
-
$9,703 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$9,754 USD
View
Retailer 8
-
$10,120 USD
A$15,570 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$10,266 USD
£8,083 GBP
View
Retailer 10
-
$10,270 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$10,385 USD
View
B
Retailer 12
-
$10,512 USD
View
Final sale: no returns
B
Retailer 13
-
$10,685 USD
A$16,438 AUD
View
B+
Retailer 14
-
$11,388 USD
View
B+
Retailer 15
-
$11,656 USD
View
Retailer 16
-
$11,886 USD
View
Price last confirmed 9 days ago
B+
Retailer 17
-
$11,947 USD
€11,378 EUR
View
B
Retailer 18
-
$13,991 USD
ZAR 226,030 ZAR
View
B
Retailer 19
-
$14,874 USD
£11,712 GBP
View
Most Expensive
NZ Jewellers
68d0f7cd-47ca-4c37-9c83-917689f9cdbe · Sep 25
$15,480 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from $8,584 USDSave up to $6,290 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
$8,584 USD