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Round|Natural|GIA

3.18ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6425577637

Certificate GIA 6425577637

Diamond specifications and retailer prices

From $64,159 SGD
As of November 1, 2026
Save $52,385 SGD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $116,544 SGD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 3.18ct natural round diamond

This 3.18ct natural round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6425577637. Listed at 15 retailers as of November 1, 2026, with prices from $64,159 to $116,544, a $52,385 spread on the same certified stone. Diamond Quarter lists it at $116,544. 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

3.18
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6425577637
Dimensions9.68 × 9.62 × 5.63 mm
L/W Ratio1.01
Top View
9.68 mm9.62 mm3.18 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6425577637
Side View
Table 62.0%Crown 33°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 58.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $67,480 SGD|Low: $64,159 SGD|High: $88,175 SGD|Avg: $74,712 SGD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$64,159 SGD
Retailer 1$67,480 SGD
Retailer 2$72,847 SGD
Retailer 3$85,368 SGD
Retailer 5$88,175 SGD

46 data points across 5 retailers

15 retailers$64,159 SGD to $116,544 SGD

B+
Cheapest Retailer
-
$64,159 SGD
B+
Retailer 2
-
$67,480 SGD
View
B+
Retailer 3
-
$68,134 SGD
View
B+
Retailer 4
-
$69,927 SGD
View
B+
Retailer 5
-
$70,815 SGD
View
B+
Retailer 6
-
$71,870 SGD
View
B+
Retailer 7
-
$72,847 SGD
View
B+
Retailer 8
-
$76,224 SGD
View
B+
Retailer 9
-
$78,273 SGD
View
B+
Retailer 10
-
$78,273 SGD
View
B+
Retailer 11
-
$80,273 SGD
View
B+
Retailer 12
-
$80,879 SGD
View
B
Retailer 13
-
$85,368 SGD
View
B
Retailer 14
-
$88,579 SGD
View
Most Expensive
B
Diamond Quarter
3.18SI1D64377A02N · Nov 5
$116,544 SGD
£71,844 GBP
View
14 more retailers have this diamond
Prices start from $64,159 SGDSave up to $52,385 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+
3.18ct Round
$64,159 SGD