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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 6555458202

Certificate GIA 6555458202

Diamond specifications and retailer prices

From $7,131 SGD
$5,578 USD
As of October 28, 2026
Save $8,060 SGD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,191 SGD at NZ Jewellers · As of October 27, 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 I 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 6555458202. Listed at 19 retailers as of October 27, 2026, with prices from $7,131 to $15,191, a $8,060 spread on the same certified stone. NZ Jewellers lists it at $15,191. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle36.4°
OriginNatural
Grading LabGIA
CertificateGIA 6555458202
Dimensions9.12 × 6.38 × 3.97 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
9.12 mm6.38 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555458202
Side View
Table 60.0%Crown 38.3°Girdle: STK-THKPavilion 36.4°Culet: NoneDepth 62.2%

Caratlytics Score

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

Price History

Last verified: Oct 28
Current: $15,191 SGD|Low: $7,523 SGD|High: $15,191 SGD|Avg: $9,764 SGD
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 29, 2026
Retailer 10$7,523 SGD
Retailer 9$7,617 SGD
Retailer 3$7,961 SGD
Retailer 4$8,384 SGD
Retailer 12$8,384 SGD
Retailer 2$8,683 SGD
Retailer 6$8,911 SGD
Retailer 8$9,083 SGD
Retailer 11$9,222 SGD
Retailer 5$9,450 SGD
Retailer 13$10,480 SGD
Retailer 7$13,453 SGD
NZ Jewellers$15,191 SGD

41 data points across 13 retailers

19 retailers$7,131 SGD to $15,191 SGD

B+
Cheapest Retailer
-
$7,131 SGD
$5,578 USD
Retailer 2
-
$7,523 SGD
$5,885 USD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$7,617 SGD
View
B+
Retailer 4
-
$7,921 SGD
$6,196 USD
View
B+
Retailer 5
-
$7,961 SGD
$6,227 USD
View
B+
Retailer 6
-
$8,384 SGD
$6,558 USD
View
Final sale: no returns
Retailer 7
-
$8,384 SGD
$6,558 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$8,683 SGD
£5,348 GBP
View
B+
Retailer 9
-
$8,911 SGD
£5,489 GBP
View
B
Retailer 10
-
$8,962 SGD
$7,010 USD
View
Retailer 11
-
$9,083 SGD
$7,105 USD
View
Price last confirmed 69 days ago
B
Retailer 12
-
$9,083 SGD
$7,105 USD
View
Retailer 13
-
$9,222 SGD
$7,214 USD
View
Price last confirmed 7 days ago
Retailer 14
-
$9,289 SGD
$7,266 USD
View
Price last confirmed 7 days ago
B
Retailer 15
-
$9,450 SGD
$7,392 USD
View
B
Retailer 16
-
$10,480 SGD
$8,198 USD
View
Retailer 17
-
$10,480 SGD
$8,198 USD
View
Price last confirmed 33 days ago
B
Retailer 18
-
$13,453 SGD
£8,286 GBP
View
Most Expensive
B
NZ Jewellers
1f934872-43fd-4ffb-8f38-2d02d3b5b9af · Oct 27
$15,191 SGD
$11,883 USD
View
18 more retailers have this diamond
Prices start from $7,131 SGDSave up to $8,060 SGD

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
$7,131 SGD