Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 7558598063

Certificate GIA 7558598063

Diamond specifications and retailer prices

From $4,456 USD
As of November 5, 2026
Save $4,197 USD (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,653 USD at NZ Jewellers · As of November 3, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558598063. Listed at 10 retailers as of November 3, 2026, with prices from $4,456 to $8,653, a $4,197 spread on the same certified stone. NZ Jewellers lists it at $8,653. 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
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle40.62°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 7558598063
Dimensions9.78 × 5.47 × 3.69 mm
L/W Ratio1.79
Girdle conditionVery Thick
Key to symbols
Crystal, Knot, Indented Natural
Top View
9.78 mm5.47 mm1.21 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7558598063
Side View
Table 59.0%Crown 40.62°GirdlePavilion 40.11°CuletDepth 67.3%

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 5
Current: $8,653 USD|Low: $4,456 USD|High: $8,755 USD|Avg: $5,763 USD|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$4,456 USD
Retailer 4$4,780 USD
Retailer 5$4,844 USD
Retailer 7$4,880 USD
Retailer 8$4,967 USD
Retailer 9$4,967 USD
Retailer 10$5,243 USD
Retailer 2$5,608 USD
Retailer 6$7,910 USD
NZ Jewellers$8,653 USD

30 data points across 10 retailers

10 retailers$4,456 USD to $8,653 USD

B+
Cheapest Retailer
-
$4,456 USD
B+
Retailer 2
-
$4,780 USD
View
B+
Retailer 3
-
$4,844 USD
View
B+
Retailer 4
-
$4,880 USD
View
B+
Retailer 5
-
$4,967 USD
View
B+
Retailer 6
-
$4,967 USD
View
Retailer 7
-
$5,243 USD
View
Price last confirmed 28 days ago
B+
Retailer 8
-
$5,608 USD
View
B
Retailer 9
-
$7,910 USD
View
Most Expensive
B
NZ Jewellers
e133051b-13b6-4904-b503-a4873a6cd697 · Nov 3
$8,653 USD
View
9 more retailers have this diamond
Prices start from $4,456 USDSave up to $4,197 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
$4,456 USD