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Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1553370505

Certificate GIA 1553370505

Diamond specifications and retailer prices

From $6,790 NZD
As of November 6, 2026
Save $3,192 NZD (32%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $9,982 NZD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J 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 1553370505. Listed at 4 retailers as of November 6, 2026, with prices from $6,790 to $9,982, a $3,192 spread on the same certified stone. 77 Diamonds lists it at $9,982. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.8°
Pavilion angle42.26°
OriginNatural
Grading LabGIA
CertificateGIA 1553370505
Dimensions10.29 × 5.55 × 3.59 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.29 mm5.55 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553370505
Side View
Table 61.0%Crown 38.8°Girdle: MED-VTKPavilion 42.26°Culet: NoneDepth 64.8%

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: $9,982 NZD|Low: $4,237 NZD|High: $10,243 NZD|Avg: $7,349 NZD|-1.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 6$4,237 NZD
Retailer 10$5,958 NZD
Retailer 3$6,140 NZD
Retailer 12$6,180 NZD
Retailer 9$6,577 NZD
Retailer 5$6,790 NZD
Retailer 11$7,176 NZD
Retailer 13$7,279 NZD
Retailer 7$7,818 NZD
Retailer 14$8,262 NZD
Retailer 8$9,027 NZD
Retailer 2$9,622 NZD
77 Diamonds$9,982 NZD
Retailer 4$10,243 NZD

18 data points across 14 retailers

4 retailers$6,790 NZD to $9,982 NZD

B
Cheapest Retailer
-
$6,790 NZD
B
Retailer 2
-
$7,818 NZD
View
B
Retailer 3
-
$9,622 NZD
View
Most Expensive
B
77 Diamonds
MQMB5GFDMHAR · Nov 6
$9,982 NZD
£4,357 GBP
View
3 more retailers have this diamond
Prices start from $6,790 NZDSave up to $3,192 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
$6,790 NZD