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Oval|Natural|GIA

3.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 6512020495

Certificate GIA 6512020495

Diamond specifications and retailer prices

From $56,253 SGD
$44,003 USD
As of October 31, 2026
Save $10,722 SGD (16%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $66,975 SGD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 3.51ct natural oval diamond

This 3.51ct natural oval sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512020495. Listed at 4 retailers as of October 31, 2026, with prices from $56,253 to $66,975, a $10,722 spread on the same certified stone. 77 Diamonds lists it at $66,975. 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

3.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6512020495
Dimensions11.54 × 8.29 × 5.44 mm
L/W Ratio1.39
Top View
11.54 mm8.29 mm3.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512020495
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $66,975 SGD|Low: $56,253 SGD|High: $67,556 SGD|Avg: $63,449 SGD|+1.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4$56,253 SGD
Retailer 2$63,976 SGD
Retailer 3$66,605 SGD
77 Diamonds$66,975 SGD

34 data points across 4 retailers

4 retailers$56,253 SGD to $66,975 SGD

B
Cheapest Retailer
-
$56,253 SGD
$44,003 USD
B
Retailer 2
-
$63,976 SGD
$50,044 USD
View
B
Retailer 3
-
$66,605 SGD
$52,100 USD
View
Most Expensive
B
77 Diamonds
OVMBK5CQAXPS · Nov 1
$66,975 SGD
£41,252 GBP
View
3 more retailers have this diamond
Prices start from $56,253 SGDSave up to $10,722 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
3.51ct Oval
$56,253 SGD