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Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 6555349689

Certificate GIA 6555349689

Diamond specifications and retailer prices

From $5,394 SGD
As of November 6, 2026
Save $6,126 SGD (53%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $12,097 SGD at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555349689. Listed at 28 retailers as of November 1, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.45°
Pavilion angle40.67°
OriginNatural
Grading LabGIA
CertificateGIA 6555349689
Dimensions10.16 × 5.45 × 3.58 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.16 mm5.45 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555349689
Side View
Table 60.0%Crown 40.45°Girdle: VTN-VTKPavilion 40.67°Culet: NoneDepth 65.7%

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: $12,097 SGD|Low: $4,359 SGD|High: $12,097 SGD|Avg: $6,835 SGD
NZ Jewellers
Retailer 2
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Retailer 25
Retailer 26
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Retailer 28
Retailer 29
November 3, 2026
Retailer 21$4,770 SGD
Retailer 20$5,028 SGD
Retailer 4$5,524 SGD
Retailer 9$5,651 SGD
Retailer 3$5,713 SGD
Retailer 16$5,715 SGD
Retailer 12$5,784 SGD
Retailer 11$6,047 SGD
Retailer 15$6,158 SGD
Retailer 10$6,487 SGD
Retailer 13$6,553 SGD
Retailer 26$6,553 SGD
Retailer 29$6,553 SGD
Retailer 19$6,778 SGD
Retailer 7$6,798 SGD
Retailer 22$6,817 SGD
Retailer 23$7,054 SGD
Retailer 2$7,055 SGD
Retailer 8$7,254 SGD
Retailer 18$7,254 SGD
Retailer 5$7,271 SGD
Retailer 14$7,422 SGD
Retailer 17$7,497 SGD
Retailer 28$7,560 SGD
Retailer 24$7,720 SGD
Retailer 27$8,890 SGD
Retailer 6$10,475 SGD
Retailer 25$11,520 SGD
NZ Jewellers$12,097 SGD

28 data points across 29 retailers

28 retailers$5,394 SGD to $11,520 SGD

Retailer 1
-
$5,344 SGD
Price last confirmed 31 days ago
B
Retailer 2
-
$5,394 SGD
View
B+
Retailer 3
-
$5,524 SGD
View
B
Retailer 4
-
$5,651 SGD
View
B
Retailer 5
-
$5,713 SGD
View
B
Retailer 6
-
$5,715 SGD
View
B
Retailer 7
-
$5,784 SGD
View
B
Retailer 8
-
$5,959 SGD
View
B
Retailer 9
-
$6,158 SGD
View
B
Retailer 10
-
$6,487 SGD
View
B
Retailer 11
-
$6,553 SGD
View
Retailer 12
-
$6,553 SGD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$6,553 SGD
View
Retailer 14
-
$6,778 SGD
View
Price last confirmed 23 days ago
B
Retailer 15
-
$6,798 SGD
View
B
Retailer 16
-
$7,054 SGD
View
B
Retailer 17
-
$7,055 SGD
View
B
Retailer 18
-
$7,254 SGD
View
B
Retailer 19
-
$7,254 SGD
View
Retailer 20
-
$7,271 SGD
View
Price last confirmed 20 days ago
B
Retailer 21
-
$7,422 SGD
View
B
Retailer 22
-
$7,497 SGD
View
B
Retailer 23
-
$7,560 SGD
View
B
Retailer 24
-
$7,720 SGD
View
B
Retailer 25
-
$8,890 SGD
View
Retailer 26
-
$10,475 SGD
View
Price last confirmed 11 days ago
B
Retailer 27
-
$11,520 SGD
View
Most Expensive
NZ Jewellers
89af7956-ae5e-4b27-b12a-bb96dfb8765d · Oct 30
$12,097 SGD
$9,439 USD
View
Price last confirmed 7 days ago
27 more retailers have this diamond
Prices start from $5,394 SGDSave up to $6,126 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
$5,394 SGD