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Marquise|Natural|GIA

0.99ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 15734060

Certificate GIA 15734060

Diamond specifications and retailer prices

From $4,286 AUD
As of November 4, 2026
Save $2,049 AUD (32%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,335 AUD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 0.99ct natural marquise diamond

This 0.99ct natural marquise sits in the just-under-one-carat band, graded E 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 15734060. Listed at 4 retailers as of November 4, 2026, with prices from $4,286 to $6,335, a $2,049 spread on the same certified stone. 77 Diamonds lists it at $6,335. 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

0.99
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 15734060
Dimensions9.68 × 5.29 × 3.32 mm
L/W Ratio1.83
Top View
9.68 mm5.29 mm0.99 ctE / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 15734060
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: SmallDepth 62.8%

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 4
Current: $6,335 AUD|Low: $4,256 AUD|High: $6,421 AUD|Avg: $5,345 AUD|+1.1%
77 Diamonds
Retailer 2
November 5, 2026
Retailer 2$4,317 AUD
77 Diamonds$6,335 AUD

34 data points across 2 retailers

4 retailers$4,286 AUD to $6,335 AUD

B+
Cheapest Retailer
-
$4,286 AUD
B+
Retailer 2
-
$4,317 AUD
View
B
Retailer 3
-
$4,640 AUD
View
Most Expensive
B
77 Diamonds
MQZMRR8DQUW · Nov 5
$6,335 AUD
£3,492 GBP
View
3 more retailers have this diamond
Prices start from $4,286 AUDSave up to $2,049 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+
0.99ct Marquise
$4,286 AUD