Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

EX • G/SI1

Diamond specifications and retailer prices

From $5,531 USD
As of November 5, 2026
Save $950 USD (15%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,740 USD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

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 17 retailers as of November 4, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions10.67 × 5.42 × 3.36 mm
L/W Ratio1.97
Top View
10.67 mm5.42 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 55.0%CrownGirdle: Very ThickPavilionCulet: NDepth 62.0%

Caratlytics Score

How it works →
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 5
Current: $10,740 USD|Low: $5,531 USD|High: $10,740 USD|Avg: $6,565 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 7$5,531 USD
Retailer 3$5,818 USD
Retailer 4$5,818 USD
Retailer 6$5,818 USD
Retailer 9$5,833 USD
Retailer 10$6,076 USD
Retailer 2$6,300 USD
Retailer 8$6,481 USD
Retailer 5$6,713 USD
NZ Jewellers$10,740 USD

23 data points across 10 retailers

17 retailers$5,531 USD to $6,481 USD

B
Cheapest Retailer
-
$5,531 USD
Retailer 2
-
$5,818 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$5,818 USD
View
Price last confirmed 20 days ago
Retailer 4
-
$5,818 USD
View
Price last confirmed 7 days ago
Retailer 5
-
$5,818 USD
View
Price last confirmed 14 days ago
Retailer 6
-
$5,818 USD
View
Price last confirmed 7 days ago
Retailer 7
-
$5,818 USD
View
Price last confirmed 16 days ago
Retailer 8
-
$5,818 USD
View
Price last confirmed 20 days ago
B
Retailer 9
-
$5,833 USD
View
Retailer 10
-
$6,076 USD
View
Price last confirmed 7 days ago
Retailer 11
-
$6,300 USD
View
Price last confirmed 7 days ago
B
Retailer 12
-
$6,481 USD
View
Retailer 13
-
$6,713 USD
View
Price last confirmed 9 days ago
Retailer 14
-
$6,713 USD
View
Price last confirmed 15 days ago
Retailer 15
-
$6,713 USD
View
Price last confirmed 60 days ago
Retailer 16
-
$10,740 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
c2a38539-61b8-46f5-a17a-5b47b4f89cf5 · Oct 21
$10,740 USD
View
Price last confirmed 15 days ago
16 more retailers have this diamond
Prices start from $5,531 USDSave up to $950 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
$5,531 USD