CaratHunter
Plans
Marquise|Natural|GIA

1.03ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2156591864

Certificate GIA 2156591864

Diamond specifications and retailer prices

From $4,382 AUD
As of November 6, 2026
Save $2,256 AUD (34%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,638 AUD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.03ct natural marquise diamond

This 1.03ct 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 2156591864. Listed at 4 retailers as of November 6, 2026, with prices from $4,382 to $6,638, a $2,256 spread on the same certified stone. 77 Diamonds lists it at $6,638. 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

1.03
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2156591864
Dimensions10.57 × 5.28 × 3.19 mm
L/W Ratio2.00
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
10.57 mm5.28 mm1.03 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2156591864
Side View
Table 61.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,638 AUD|Low: $4,382 AUD|High: $6,769 AUD|Avg: $5,468 AUD|+0.5%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 2$4,382 AUD
Retailer 3$5,219 AUD
77 Diamonds$6,638 AUD

44 data points across 3 retailers

4 retailers$4,382 AUD to $6,638 AUD

A
Cheapest Retailer
-
$4,382 AUD
A
Retailer 2
-
$4,886 AUD
View
B+
Retailer 3
-
$5,219 AUD
View
Most Expensive
B
77 Diamonds
MQCPUAFNTUWB · Nov 6
$6,638 AUD
£3,591 GBP
View
3 more retailers have this diamond
Prices start from $4,382 AUDSave up to $2,256 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.

A
1.03ct Marquise
$4,382 AUD