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Round|Natural|GIA

3.18ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6551717443

Certificate GIA 6551717443

Diamond specifications and retailer prices

From $51,418 SGD
As of November 4, 2026
Save $36,953 SGD (42%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $88,371 SGD at MOH London · As of November 4, 2026
View at MOH London

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 6551717443. Listed at 24 retailers as of November 4, 2026, with prices from $51,418 to $88,371, a $36,953 spread on the same certified stone. MOH London lists it at $88,371. 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
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551717443
Dimensions9.35 × 9.29 × 5.77 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
9.35 mm9.29 mm3.18 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551717443
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 61.9%

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 4
Current: $88,371 SGD|Low: $50,716 SGD|High: $119,862 SGD|Avg: $71,119 SGD|-26.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 6, 2026
Retailer 20$50,716 SGD
Retailer 3$51,418 SGD
Retailer 6$52,008 SGD
Retailer 4$54,988 SGD
Retailer 16$56,196 SGD
Retailer 10$56,736 SGD
Retailer 7$56,777 SGD
Retailer 9$59,011 SGD
Retailer 18$59,011 SGD
Retailer 5$59,101 SGD
Retailer 11$59,101 SGD
Retailer 15$60,681 SGD
Retailer 8$60,711 SGD
Retailer 22$60,978 SGD
Retailer 21$61,464 SGD
Retailer 19$63,828 SGD
Retailer 17$68,608 SGD
Retailer 12$72,266 SGD
Retailer 13$73,042 SGD
Retailer 2$76,568 SGD
Retailer 14$77,828 SGD
MOH London$88,371 SGD

25 data points across 22 retailers

24 retailers$51,418 SGD to $88,371 SGD

Retailer 1
-
$50,716 SGD
Price last confirmed 8 days ago
A
Retailer 2
-
$51,418 SGD
View
A
Retailer 3
-
$52,008 SGD
View
Final sale: no returns
A
Retailer 4
-
$54,988 SGD
View
A
Retailer 5
-
$56,196 SGD
View
Retailer 6
-
$56,736 SGD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$56,777 SGD
View
B+
Retailer 8
-
$59,011 SGD
View
B+
Retailer 9
-
$59,011 SGD
View
B+
Retailer 10
-
$59,101 SGD
View
B+
Retailer 11
-
$59,101 SGD
View
B+
Retailer 12
-
$60,681 SGD
View
B+
Retailer 13
-
$60,711 SGD
View
B+
Retailer 14
-
$60,978 SGD
View
B+
Retailer 15
-
$61,464 SGD
View
B+
Retailer 16
-
$63,828 SGD
View
B+
Retailer 17
-
$68,608 SGD
View
Retailer 18
-
$72,266 SGD
View
Price last confirmed 37 days ago
B
Retailer 19
-
$73,042 SGD
View
B+
Retailer 20
-
$76,568 SGD
View
Retailer 21
-
$79,945 SGD
View
Price last confirmed 48 days ago
Retailer 22
-
$83,143 SGD
View
Price last confirmed 45 days ago
Retailer 23
-
$86,340 SGD
View
Price last confirmed 45 days ago
Most Expensive
B
MOH London
0BC3ED65C · Nov 4
$88,371 SGD
£54,477 GBP
View
23 more retailers have this diamond
Prices start from $51,418 SGDSave up to $36,953 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
3.18ct Round
$51,418 SGD