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Round|Natural|GIA

1.65ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1518220126

Certificate GIA 1518220126

Diamond specifications and retailer prices

From $2,928 SGD
As of November 5, 2026
Save $1,298 SGD (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,226 SGD at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.65ct natural round diamond

This 1.65ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1518220126. Listed at 3 retailers as of November 5, 2026, with prices from $2,928 to $4,226, a $1,298 spread on the same certified stone. Yorxs lists it at $4,226. 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

1.65
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1518220126
Dimensions7.51 × 7.57 × 4.68 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.51 mm7.57 mm1.65 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1518220126
Side View
Table 60.0%Crown 34°Girdle: STK-STKPavilion 41.6°Culet: NoneDepth 62.0%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $2,928 SGD|Low: $2,928 SGD|High: $4,249 SGD|Avg: $3,562 SGD|-1.4%
Retailer 1
Retailer 2
Yorxs
November 6, 2026
Retailer 1$2,928 SGD
Retailer 2$3,527 SGD
Yorxs$4,226 SGD

45 data points across 3 retailers

3 retailers$2,928 SGD to $4,226 SGD

A
Cheapest Retailer
-
$2,928 SGD
B+
Retailer 2
-
$3,527 SGD
View
Most Expensive
B+
Yorxs
OM1448 · Nov 6
$4,226 SGD
€3,151 EUR
View
2 more retailers have this diamond
Prices start from $2,928 SGDSave up to $1,298 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
1.65ct Round
$2,928 SGD