CaratHunter
Plans
Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 6431020211

Certificate GIA 6431020211

Diamond specifications and retailer prices

From $5,197 SGD
₹387,147 INR
As of October 31, 2026
Save $7,985 SGD (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $13,182 SGD at Adiamor · As of November 1, 2026
View at Adiamor

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 6431020211. Listed at 18 retailers as of October 31, 2026, with prices from $5,197 to $13,182, a $7,985 spread on the same certified stone. Adiamor lists it at $13,182. 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
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6431020211
Dimensions8.37 × 6.31 × 4.09 mm
L/W Ratio1.33
Top View
8.37 mm6.31 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6431020211
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $8,098 SGD|Low: $4,963 SGD|High: $11,537 SGD|Avg: $7,078 SGD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4$5,197 SGD
Retailer 5$5,204 SGD
Retailer 10$6,017 SGD
Retailer 9$6,242 SGD
Retailer 7$6,283 SGD
Retailer 8$6,605 SGD
Retailer 3$6,983 SGD
Retailer 2$7,158 SGD
Retailer 1$8,098 SGD
Retailer 6$11,461 SGD

38 data points across 10 retailers

18 retailers$5,197 SGD to $13,182 SGD

A
Cheapest Retailer
-
$5,197 SGD
₹387,147 INR
A
Retailer 2
-
$5,204 SGD
HK$31,800 HKD
View
A
Retailer 3
-
$6,017 SGD
$4,707 USD
View
A
Retailer 4
-
$6,112 SGD
$4,781 USD
View
A
Retailer 5
-
$6,242 SGD
$4,883 USD
View
Retailer 6
-
$6,283 SGD
$4,915 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$6,605 SGD
$5,167 USD
View
Final sale: no returns
B+
Retailer 8
-
$6,611 SGD
View
B+
Retailer 9
-
$6,983 SGD
£4,301 GBP
View
B+
Retailer 10
-
$7,158 SGD
$5,599 USD
View
B+
Retailer 11
-
$7,158 SGD
$5,599 USD
View
B+
Retailer 12
-
$7,158 SGD
$5,599 USD
View
B+
Retailer 13
-
$7,355 SGD
$5,753 USD
View
B+
Retailer 14
-
$8,098 SGD
€6,033 EUR
View
B+
Retailer 15
-
$8,258 SGD
$6,460 USD
View
B
Retailer 16
-
$11,461 SGD
£7,059 GBP
View
B
Retailer 17
-
$11,971 SGD
$9,364 USD
View
Most Expensive
B
Adiamor
D-64716253 · Nov 1
$13,182 SGD
$10,311 USD
View
17 more retailers have this diamond
Prices start from $5,197 SGDSave up to $7,985 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.

A
1.51ct Oval
$5,197 SGD