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Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 274

Certificate GIA 274

Diamond specifications and retailer prices

From $12,645 NZD
As of November 7, 2026
3 retailers carry this diamond
Most expensive: $15,544 NZD at Helzberg Diamonds · As of October 27, 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 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. Listed at 3 retailers as of November 7, 2026. 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

1.21
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 274
Dimensions11.28 × 5.32 × 3.39 mm
L/W Ratio2.12
Top View
11.28 mm5.32 mm1.21 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 274
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCuletDepth 63.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 7
Current: $15,544 NZD|Low: $9,326 NZD|High: $16,345 NZD|Avg: $12,731 NZD|-4.9%
Helzberg Diamonds
Retailer 2
Retailer 3
November 7, 2026
Retailer 3$9,326 NZD
Retailer 2$12,645 NZD
Helzberg Diamonds$15,544 NZD

8 data points across 3 retailers

3 retailers

Retailer 1
-
$9,326 NZD
Price last confirmed 14 days ago
B
Retailer 2
-
$12,645 NZD
View
Most Expensive
Helzberg Diamonds
XZRIIKHGKLLKO · Oct 27
$15,544 NZD
$8,617 USD
View
Price last confirmed 11 days ago
2 more retailers have this diamond
Prices start from $12,645 NZD

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
$12,645 NZD