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Marquise|Natural|GIA

1.20ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 6545625677

Certificate GIA 6545625677

Diamond specifications and retailer prices

From $8,371 SGD
As of November 6, 2026
Save $5,066 SGD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $16,657 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545625677. Listed at 12 retailers as of November 4, 2026, with a 61% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545625677
Dimensions11.89 × 5.23 × 3.31 mm
L/W Ratio2.27
Top View
11.89 mm5.23 mm1.20 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545625677
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $16,657 SGD|Low: $8,265 SGD|High: $16,657 SGD|Avg: $10,372 SGD|+1.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 6$8,371 SGD
Retailer 5$8,559 SGD
Retailer 2$8,609 SGD
Retailer 11$9,138 SGD
Retailer 9$9,297 SGD
Retailer 7$9,429 SGD
Retailer 4$9,516 SGD
Retailer 8$9,902 SGD
Retailer 13$10,059 SGD
Retailer 3$10,797 SGD
Retailer 10$12,151 SGD
Retailer 12$13,438 SGD
NZ Jewellers$16,657 SGD

15 data points across 13 retailers

12 retailers$8,371 SGD to $13,438 SGD

B
Cheapest Retailer
-
$8,371 SGD
B
Retailer 2
-
$8,609 SGD
View
B
Retailer 3
-
$9,138 SGD
View
B
Retailer 4
-
$9,297 SGD
View
B
Retailer 5
-
$9,429 SGD
View
Retailer 6
-
$9,516 SGD
View
Price last confirmed 35 days ago
B
Retailer 7
-
$9,902 SGD
View
B
Retailer 8
-
$10,059 SGD
View
B
Retailer 9
-
$10,797 SGD
View
B
Retailer 10
-
$12,151 SGD
View
B
Retailer 11
-
$13,438 SGD
View
Most Expensive
NZ Jewellers
7c049642-ce40-4b7b-9fc2-ef4b83bc0466 · Nov 5
$16,657 SGD
$12,997 USD
View
Price under review
11 more retailers have this diamond
Prices start from $8,371 SGDSave up to $5,066 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
$8,371 SGD