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Marquise|Natural|GIA

1.28ct D I1 Marquise Natural Diamond

ID • D/I1 • GIA 2556150715

Certificate GIA 2556150715

Diamond specifications and retailer prices

From $3,517 AUD
HK$19,300 HKD
As of November 1, 2026
Save $1,381 AUD (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,898 AUD at Michael Trio · As of November 1, 2026
View at Michael Trio

About this 1.28ct natural marquise diamond

This 1.28ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and I1 clarity (included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556150715. Listed at 4 retailers as of November 1, 2026, with prices from $3,517 to $4,898, a $1,381 spread on the same certified stone. Michael Trio lists it at $4,898. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
I1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle30.19°
Pavilion angle40.53°
OriginNatural
Grading LabGIA
CertificateGIA 2556150715
Dimensions12.24 × 5.46 × 3.40 mm
L/W Ratio2.24
Top View
12.24 mm5.46 mm1.28 ctD / I1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556150715
Side View
Table 59.0%Crown 30.19°Girdle: THK-VTKPavilion 40.53°Culet: NoneDepth 62.2%

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 1
Current: $4,898 AUD|Low: $3,480 AUD|High: $7,407 AUD|Avg: $5,028 AUD|-3.1%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2$3,517 AUD
Retailer 4$4,188 AUD
Retailer 3$4,314 AUD
Michael Trio$4,898 AUD
Retailer 5$7,407 AUD

16 data points across 5 retailers

4 retailers$3,517 AUD to $4,898 AUD

A
Cheapest Retailer
-
$3,517 AUD
HK$19,300 HKD
A
Retailer 2
-
$4,188 AUD
$2,942 USD
View
A
Retailer 3
-
$4,314 AUD
$3,030 USD
View
Final sale: no returns
Most Expensive
A
Michael Trio
1794604200 · Nov 1
$4,898 AUD
SGD 4,649 SGD
View
3 more retailers have this diamond
Prices start from $3,517 AUDSave up to $1,381 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
1.28ct Marquise
$3,517 AUD