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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

VG • H/SI2 • GIA 6551370295

Certificate GIA 6551370295

Diamond specifications and retailer prices

From $4,133 SGD
As of November 4, 2026
Save $3,276 SGD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,409 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551370295. Listed at 12 retailers as of November 4, 2026, with prices from $4,133 to $7,409, a $3,276 spread on the same certified stone. Helzberg Diamonds lists it at $7,409. 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

1.21
Carat
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.97°
Pavilion angle39.32°
OriginNatural
Grading LabGIA
CertificateGIA 6551370295
Dimensions10.12 × 5.47 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.12 mm5.47 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551370295
Side View
Table 60.0%Crown 40.97°Girdle: MED-VTKPavilion 39.32°Culet: NoneDepth 64.8%

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 4
Current: $7,409 SGD|Low: $4,133 SGD|High: $7,714 SGD|Avg: $5,320 SGD|-2.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 10$4,133 SGD
Retailer 9$4,210 SGD
Retailer 12$4,418 SGD
Retailer 8$4,466 SGD
Retailer 4$4,511 SGD
Retailer 2$4,773 SGD
Retailer 11$5,271 SGD
Retailer 3$5,346 SGD
Retailer 6$5,497 SGD
Retailer 5$5,734 SGD
Retailer 7$7,379 SGD
Helzberg Diamonds$7,409 SGD

41 data points across 12 retailers

12 retailers$4,133 SGD to $7,409 SGD

B+
Cheapest Retailer
-
$4,133 SGD
B+
Retailer 2
-
$4,418 SGD
View
B+
Retailer 3
-
$4,466 SGD
View
B+
Retailer 4
-
$4,511 SGD
View
B+
Retailer 5
-
$4,773 SGD
View
B
Retailer 6
-
$5,271 SGD
View
B
Retailer 7
-
$5,346 SGD
View
B
Retailer 8
-
$5,488 SGD
View
B
Retailer 9
-
$5,497 SGD
View
B
Retailer 10
-
$5,734 SGD
View
B
Retailer 11
-
$7,379 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLHJNGIPL · Nov 6
$7,409 SGD
$5,781 USD
View
11 more retailers have this diamond
Prices start from $4,133 SGDSave up to $3,276 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+
1.21ct Marquise
$4,133 SGD