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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 $5,818 NZD
As of November 4, 2026
Save $4,611 NZD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,428 NZD 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 $5,818 to $10,428, a $4,611 spread on the same certified stone. Helzberg Diamonds lists it at $10,428. 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: $10,428 NZD|Low: $5,818 NZD|High: $10,858 NZD|Avg: $7,489 NZD|-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$5,818 NZD
Retailer 9$5,926 NZD
Retailer 12$6,218 NZD
Retailer 8$6,287 NZD
Retailer 4$6,350 NZD
Retailer 2$6,718 NZD
Retailer 11$7,419 NZD
Retailer 3$7,524 NZD
Retailer 6$7,737 NZD
Retailer 5$8,071 NZD
Retailer 7$10,387 NZD
Helzberg Diamonds$10,428 NZD

41 data points across 12 retailers

12 retailers$5,818 NZD to $10,428 NZD

B+
Cheapest Retailer
-
$5,818 NZD
B+
Retailer 2
-
$6,218 NZD
View
B+
Retailer 3
-
$6,287 NZD
View
B+
Retailer 4
-
$6,350 NZD
View
B+
Retailer 5
-
$6,718 NZD
View
B
Retailer 6
-
$7,419 NZD
View
B
Retailer 7
-
$7,524 NZD
View
B
Retailer 8
-
$7,724 NZD
View
B
Retailer 9
-
$7,737 NZD
View
B
Retailer 10
-
$8,071 NZD
View
B
Retailer 11
-
$10,387 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLHJNGIPL · Nov 6
$10,428 NZD
$5,781 USD
View
11 more retailers have this diamond
Prices start from $5,818 NZDSave up to $4,611 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
$5,818 NZD