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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555380367

Certificate GIA 6555380367

Diamond specifications and retailer prices

From $6,381 SGD
As of November 6, 2026
Save $7,986 SGD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,367 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555380367. Listed at 18 retailers as of November 5, 2026, with prices from $6,381 to $14,367, a $7,986 spread on the same certified stone. NZ Jewellers lists it at $14,367. 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555380367
Dimensions11.02 × 5.41 × 3.46 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural
Top View
11.02 mm5.41 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555380367
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.9%

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 6
Current: $9,331 SGD|Low: $6,316 SGD|High: $12,807 SGD|Avg: $9,059 SGD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$6,381 SGD
Retailer 7$7,928 SGD
Retailer 2$8,157 SGD
Retailer 6$8,383 SGD
Retailer 1$9,331 SGD
Retailer 3$10,481 SGD
Retailer 4$12,621 SGD

45 data points across 7 retailers

18 retailers$6,381 SGD to $14,367 SGD

B+
Cheapest Retailer
-
$6,381 SGD
B+
Retailer 2
-
$7,268 SGD
View
Retailer 3
-
$7,273 SGD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$7,491 SGD
View
B
Retailer 5
-
$7,928 SGD
View
Final sale: no returns
Retailer 6
-
$7,929 SGD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$7,972 SGD
View
B+
Retailer 8
-
$8,157 SGD
View
Retailer 9
-
$8,383 SGD
View
Price last confirmed 26 days ago
B
Retailer 10
-
$8,591 SGD
View
B
Retailer 11
-
$8,723 SGD
View
B
Retailer 12
-
$8,793 SGD
View
B
Retailer 13
-
$9,331 SGD
View
Retailer 14
-
$9,912 SGD
View
Price last confirmed 62 days ago
B
Retailer 15
-
$9,912 SGD
View
B
Retailer 16
-
$10,481 SGD
View
B
Retailer 17
-
$12,621 SGD
View
Most Expensive
B
NZ Jewellers
0bcfb9a2-8027-4021-b8ae-6ab190999d2e · Nov 5
$14,367 SGD
$11,210 USD
View
17 more retailers have this diamond
Prices start from $6,381 SGDSave up to $7,986 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+
1.20ct Marquise
$6,381 SGD