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Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

ID • H/SI2 • GIA 1548148688

Certificate GIA 1548148688

Diamond specifications and retailer prices

From $5,668 USD
As of October 31, 2026
Save $7,277 USD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $12,945 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548148688. Listed at 18 retailers as of October 30, 2026, with prices from $5,668 to $12,945, a $7,277 spread on the same certified stone. NZ Jewellers lists it at $12,945. 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
H
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.14°
Pavilion angle36.64°
OriginNatural
Grading LabGIA
CertificateGIA 1548148688
Dimensions9.13 × 6.40 × 3.82 mm
L/W Ratio1.43
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Feather, Cavity, Indented Natural
Top View
9.13 mm6.40 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1548148688
Side View
Table 59.0%Crown 39.14°Girdle: STK-VTKPavilion 36.64°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $12,945 USD|Low: $5,611 USD|High: $12,945 USD|Avg: $7,845 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
Retailer 14
Retailer 15
November 2, 2026
Retailer 4$5,668 USD
Retailer 13$6,115 USD
Retailer 7$6,472 USD
Retailer 12$6,472 USD
Retailer 14$6,526 USD
Retailer 5$7,012 USD
Retailer 15$7,120 USD
Retailer 3$7,143 USD
Retailer 2$7,297 USD
Retailer 11$7,801 USD
Retailer 6$8,090 USD
Retailer 9$8,458 USD
Retailer 10$8,528 USD
Retailer 8$10,786 USD
NZ Jewellers$12,945 USD

42 data points across 15 retailers

18 retailers$5,668 USD to $12,945 USD

B+
Cheapest Retailer
-
$5,668 USD
B+
Retailer 2
-
$6,115 USD
View
B+
Retailer 3
-
$6,472 USD
View
B+
Retailer 4
-
$6,472 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,526 USD
View
B+
Retailer 6
-
$7,012 USD
View
B
Retailer 7
-
$7,120 USD
View
B
Retailer 8
-
$7,143 USD
View
B+
Retailer 9
-
$7,297 USD
£5,746 GBP
View
B+
Retailer 10
-
$7,675 USD
View
B+
Retailer 11
-
$7,770 USD
View
B+
Retailer 12
-
$7,770 USD
View
B+
Retailer 13
-
$7,801 USD
View
B
Retailer 14
-
$8,030 USD
View
B
Retailer 15
-
$8,090 USD
View
B
Retailer 16
-
$8,458 USD
€8,055 EUR
View
B
Retailer 17
-
$10,786 USD
£8,493 GBP
View
Most Expensive
B
NZ Jewellers
4d673faf-1ed0-41f7-8537-26c63027609b · Oct 30
$12,945 USD
View
17 more retailers have this diamond
Prices start from $5,668 USDSave up to $7,277 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.

B+
1.51ct Oval
$5,668 USD