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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2235875611

Certificate GIA 2235875611

Diamond specifications and retailer prices

From $8,574 AUD
As of November 6, 2026
Save $8,901 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $17,475 AUD at NZ Jewellers · As of November 5, 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 2235875611. Listed at 15 retailers as of November 5, 2026, with prices from $8,574 to $17,475, a $8,901 spread on the same certified stone. NZ Jewellers lists it at $17,475. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.71°
Pavilion angle39.87°
OriginNatural
Grading LabGIA
CertificateGIA 2235875611
Dimensions9.99 × 5.48 × 3.60 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.99 mm5.48 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235875611
Side View
Table 61.0%Crown 43.71°Girdle: STK-THKPavilion 39.87°Culet: NoneDepth 65.7%

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 6
Current: $17,475 AUD|Low: $9,643 AUD|High: $17,475 AUD|Avg: $12,011 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$9,643 AUD
Retailer 3$9,920 AUD
Retailer 6$10,140 AUD
Retailer 9$10,448 AUD
Retailer 7$10,608 AUD
Retailer 2$11,352 AUD
Retailer 4$12,748 AUD
Retailer 5$15,021 AUD
NZ Jewellers$17,475 AUD

46 data points across 9 retailers

15 retailers$8,574 AUD to $17,475 AUD

B+
Cheapest Retailer
-
$8,574 AUD
B+
Retailer 2
-
$8,840 AUD
View
B+
Retailer 3
-
$9,112 AUD
View
Retailer 4
-
$9,643 AUD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$9,664 AUD
View
B+
Retailer 6
-
$9,920 AUD
View
Retailer 7
-
$10,140 AUD
View
Price last confirmed 15 days ago
B
Retailer 8
-
$10,448 AUD
View
B
Retailer 9
-
$10,608 AUD
View
B
Retailer 10
-
$10,683 AUD
View
B
Retailer 11
-
$11,352 AUD
View
B
Retailer 12
-
$12,055 AUD
View
B
Retailer 13
-
$12,748 AUD
View
B
Retailer 14
-
$15,021 AUD
View
Most Expensive
B
NZ Jewellers
73d8b48a-968c-47cf-8063-b3b856ef1991 · Nov 5
$17,475 AUD
$12,007 USD
View
14 more retailers have this diamond
Prices start from $8,574 AUDSave up to $8,901 AUD

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
$8,574 AUD