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Round|Natural|GIA

0.65ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1559817085

Certificate GIA 1559817085

Diamond specifications and retailer prices

From $1,305 SGD
$1,021 USD
As of October 28, 2026
Save $935 SGD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,241 SGD at Cape Diamonds · As of October 26, 2026
View at Cape Diamonds

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559817085. Listed at 13 retailers as of October 26, 2026, with prices from $1,305 to $2,241, a $935 spread on the same certified stone. Cape Diamonds lists it at $2,241. 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

0.65
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559817085
Dimensions5.66 × 5.69 × 3.37 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.66 mm5.69 mm0.65 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559817085
Side View
Table 61.0%Crown 32.5°Girdle: MED-MEDPavilion 41.4°Culet: NoneDepth 59.3%

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 28
Current: $2,241 SGD|Low: $1,305 SGD|High: $2,250 SGD|Avg: $1,735 SGD|+2.4%
Cape Diamonds
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 28, 2026
Retailer 13$1,305 SGD
Retailer 12$1,310 SGD
Retailer 11$1,538 SGD
Retailer 8$1,649 SGD
Retailer 10$1,649 SGD
Retailer 2$1,698 SGD
Retailer 9$1,700 SGD
Retailer 5$1,727 SGD
Retailer 7$1,859 SGD
Retailer 6$1,890 SGD
Retailer 3$1,934 SGD
Retailer 4$2,077 SGD
Cape Diamonds$2,241 SGD

38 data points across 13 retailers

13 retailers$1,305 SGD to $2,241 SGD

A
Cheapest Retailer
-
$1,305 SGD
$1,021 USD
A
Retailer 2
-
$1,310 SGD
$1,025 USD
View
Price last confirmed 5 days ago
B+
Retailer 3
-
$1,538 SGD
$1,203 USD
View
B
Retailer 4
-
$1,649 SGD
$1,290 USD
View
B
Retailer 5
-
$1,649 SGD
$1,290 USD
View
B+
Retailer 6
-
$1,698 SGD
£1,046 GBP
View
B+
Retailer 7
-
$1,700 SGD
$1,330 USD
View
B+
Retailer 8
-
$1,727 SGD
A$2,078 AUD
View
B
Retailer 9
-
$1,859 SGD
£1,145 GBP
View
B+
Retailer 10
-
$1,890 SGD
€1,408 EUR
View
B
Retailer 11
-
$1,934 SGD
$1,513 USD
View
B
Retailer 12
-
$2,077 SGD
$1,624 USD
View
Most Expensive
B
Cape Diamonds
cert_1559817085 · Oct 26
$2,241 SGD
ZAR 28,315 ZAR
View
12 more retailers have this diamond
Prices start from $1,305 SGDSave up to $935 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
0.65ct Round
$1,305 SGD