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Oval|Natural|GIA

1.23ct H SI2 Oval Natural Diamond

ID • H/SI2 • GIA 310

Certificate GIA 310

Diamond specifications and retailer prices

From $2,150 SGD
$1,682 USD
As of October 28, 2026
2 retailers carry this diamond
Most expensive: $4,012 SGD at Helzberg Diamonds · As of October 8, 2026
View at Helzberg Diamonds

About this 1.23ct natural oval diamond

This 1.23ct natural oval sits in the classic one-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. Listed at 2 retailers as of October 28, 2026. 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

1.23
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 310
Dimensions8.52 × 6.11 × 3.81 mm
L/W Ratio1.39
Top View
8.52 mm6.11 mm1.23 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 310
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $4,012 SGD|Low: $2,150 SGD|High: $4,115 SGD|Avg: $2,973 SGD|-2.5%
Helzberg Diamonds
Retailer 2
Retailer 3
October 17, 2026
Retailer 2$2,150 SGD
Retailer 3$2,681 SGD
Helzberg Diamonds$4,012 SGD

7 data points across 3 retailers

2 retailers

A
Cheapest Retailer
-
$2,150 SGD
$1,682 USD
Most Expensive
Helzberg Diamonds
XZRNLLMKOIJKJ · Oct 8
$4,012 SGD
$3,138 USD
View
Price last confirmed 24 days ago
1 more retailer has this diamond
Prices start from $2,150 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
1.23ct Oval
$2,150 SGD