Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1525339860

Certificate GIA 1525339860

Diamond specifications and retailer prices

From $6,625 USD
As of October 29, 2026
Save $8,020 USD (55%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $14,645 USD at NZ Jewellers · As of September 14, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1525339860. Listed at 28 retailers as of October 29, 2026, with a 121% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1525339860
Dimensions7.34 × 7.38 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.34 mm7.38 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525339860
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.9%

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 29
Current: $14,645 USD|Low: $5,789 USD|High: $14,645 USD|Avg: $8,704 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 4$6,856 USD
Retailer 8$6,947 USD
Retailer 9$7,322 USD
Retailer 12$7,323 USD
Retailer 13$7,933 USD
Retailer 10$8,055 USD
Retailer 5$8,065 USD
Retailer 2$8,105 USD
Retailer 11$8,852 USD
Retailer 6$9,101 USD
Retailer 3$9,153 USD
Retailer 7$12,268 USD
NZ Jewellers$14,645 USD

42 data points across 13 retailers

28 retailers$6,625 USD to $14,645 USD

A
Cheapest Retailer
-
$6,625 USD
A
Retailer 2
-
$6,821 USD
A$10,493 AUD
View
A
Retailer 3
-
$6,856 USD
View
A
Retailer 4
-
$6,947 USD
View
A
Retailer 5
-
$7,034 USD
View
A
Retailer 6
-
$7,322 USD
View
Final sale: no returns
A
Retailer 7
-
$7,323 USD
View
A
Retailer 8
-
$7,800 USD
View
Retailer 9
-
$7,933 USD
View
Price last confirmed 52 days ago
Retailer 10
-
$7,933 USD
View
Price last confirmed 46 days ago
A
Retailer 11
-
$7,933 USD
View
B+
Retailer 12
-
$8,055 USD
View
Retailer 13
-
$8,065 USD
View
Price last confirmed 7 days ago
A
Retailer 14
-
$8,105 USD
£6,382 GBP
View
B+
Retailer 15
-
$8,105 USD
View
B+
Retailer 16
-
$8,195 USD
View
B+
Retailer 17
-
$8,580 USD
View
B+
Retailer 18
-
$8,580 USD
View
B+
Retailer 19
-
$8,852 USD
View
B+
Retailer 20
-
$8,860 USD
View
B+
Retailer 21
-
$9,101 USD
€8,668 EUR
View
Retailer 22
-
$9,153 USD
View
Price last confirmed 53 days ago
Retailer 23
-
$9,153 USD
View
Price last confirmed 46 days ago
B+
Retailer 24
-
$9,153 USD
View
B+
Retailer 25
-
$12,268 USD
£9,660 GBP
View
Retailer 26
-
$14,645 USD
View
Price last confirmed 59 days ago
B
Retailer 27
-
$14,645 USD
View
Most Expensive
NZ Jewellers
56c3b2a2-e2db-4670-8242-ef152f7bc2de · Sep 14
$14,645 USD
View
Price last confirmed 46 days ago
27 more retailers have this diamond
Prices start from $6,625 USDSave up to $8,020 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
$6,625 USD