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1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2527507448

Certificate GIA 2527507448

Diamond specifications and retailer prices

From $8,205 USD
As of October 27, 2026
Save $6,848 USD (45%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $15,053 USD at NZ Jewellers · As of October 27, 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 2527507448. Listed at 27 retailers as of October 27, 2026, with prices from $8,205 to $15,053, a $6,848 spread on the same certified stone. NZ Jewellers lists it at $15,053. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2527507448
Dimensions7.28 × 7.33 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.28 mm7.33 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2527507448
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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 27
Current: $15,053 USD|Low: $7,176 USD|High: $15,053 USD|Avg: $10,996 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 3$8,611 USD
Retailer 8$9,031 USD
Retailer 2$9,780 USD
Retailer 6$9,928 USD
Retailer 9$9,935 USD
Retailer 5$10,791 USD
Retailer 10$10,971 USD
Retailer 7$13,034 USD
Retailer 4$14,182 USD
NZ Jewellers$15,053 USD

42 data points across 10 retailers

27 retailers$8,205 USD to $15,053 USD

A
Cheapest Retailer
-
$8,205 USD
A
Retailer 2
-
$8,457 USD
View
A
Retailer 3
-
$8,611 USD
View
B+
Retailer 4
-
$8,718 USD
View
B+
Retailer 5
-
$8,960 USD
View
B+
Retailer 6
-
$9,031 USD
View
Final sale: no returns
B+
Retailer 7
-
$9,032 USD
View
B+
Retailer 8
-
$9,630 USD
View
B+
Retailer 9
-
$9,780 USD
£7,701 GBP
View
B+
Retailer 10
-
$9,785 USD
View
Price last confirmed 48 days ago
B+
Retailer 11
-
$9,785 USD
View
B+
Retailer 12
-
$9,928 USD
A$15,274 AUD
View
B+
Retailer 13
-
$9,935 USD
View
B+
Retailer 14
-
$9,996 USD
View
B+
Retailer 15
-
$10,046 USD
View
B+
Retailer 16
-
$10,082 USD
View
B+
Retailer 17
-
$10,460 USD
View
B+
Retailer 18
-
$10,460 USD
View
B+
Retailer 19
-
$10,791 USD
€10,277 EUR
View
B+
Retailer 20
-
$10,810 USD
View
B+
Retailer 21
-
$10,971 USD
View
B+
Retailer 22
-
$11,290 USD
View
Price last confirmed 52 days ago
B+
Retailer 23
-
$11,290 USD
View
B
Retailer 24
-
$13,034 USD
ZAR 210,571 ZAR
View
B
Retailer 25
-
$14,182 USD
£11,167 GBP
View
B
Retailer 26
-
$15,053 USD
View
Price last confirmed 48 days ago
Most Expensive
B
NZ Jewellers
37a199b9-87a9-47ef-83b8-89bff342d19c · Oct 27
$15,053 USD
View
26 more retailers have this diamond
Prices start from $8,205 USDSave up to $6,848 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
$8,205 USD