Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2245015553

Certificate GIA 2245015553

Diamond specifications and retailer prices

From $5,448 USD
As of November 5, 2026
Save $1,395 USD (20%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,843 USD at 77 Diamonds · As of November 4, 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 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 2245015553. Listed at 4 retailers as of November 4, 2026, with prices from $5,448 to $6,843, a $1,395 spread on the same certified stone. 77 Diamonds lists it at $6,843. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.12°
Pavilion angle40.34°
OriginNatural
Grading LabGIA
CertificateGIA 2245015553
Dimensions10.18 × 5.50 × 3.61 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.18 mm5.50 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245015553
Side View
Table 56.0%Crown 37.12°Girdle: THN-VTKPavilion 40.34°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,843 USD|Low: $3,500 USD|High: $7,792 USD|Avg: $5,743 USD|-1.6%
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
November 4, 2026
Retailer 3$3,500 USD
Retailer 8$4,407 USD
Retailer 11$4,731 USD
Retailer 9$4,777 USD
Retailer 12$4,790 USD
Retailer 2$5,591 USD
Retailer 13$5,708 USD
Retailer 4$6,050 USD
Retailer 6$6,072 USD
77 Diamonds$6,843 USD
Retailer 5$6,963 USD
Retailer 7$7,235 USD
Retailer 10$7,792 USD

26 data points across 13 retailers

4 retailers$5,448 USD to $6,843 USD

B+
Cheapest Retailer
-
$5,448 USD
B
Retailer 2
-
$5,591 USD
View
B
Retailer 3
-
$5,725 USD
View
Most Expensive
B
77 Diamonds
MQMBKHPFSYF5 · Nov 4
$6,843 USD
£5,388 GBP
View
3 more retailers have this diamond
Prices start from $5,448 USDSave up to $1,395 USD

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
$5,448 USD