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Cushion|Natural|GIA

0.78ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 7556315148

Certificate GIA 7556315148

Diamond specifications and retailer prices

From £653 GBP
MYR 3,563 MYR
As of October 30, 2026
Save £75 GBP (10%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £728 GBP at Michael Trio · As of November 1, 2026
View at Michael Trio

About this 0.78ct natural cushion diamond

This 0.78ct natural cushion sits in the just-under-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 7556315148. Listed at 3 retailers as of October 30, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.78
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556315148
Dimensions5.77 × 4.80 × 3.26 mm
L/W Ratio1.20
Top View
5.77 mm4.80 mm0.78 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7556315148
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £728 GBP|Low: £653 GBP|High: £810 GBP|Avg: £727 GBP|-10.2%
Michael Trio
Retailer 2
Retailer 3
October 17, 2026
Retailer 3£653 GBP
Retailer 2£707 GBP
Michael Trio£728 GBP

7 data points across 3 retailers

3 retailers£653 GBP to £728 GBP

A
Cheapest Retailer
-
£653 GBP
MYR 3,563 MYR
A
Retailer 2
-
£707 GBP
$947 USD
View
Most Expensive
A
Michael Trio
1682346419 · Nov 1
£728 GBP
SGD 1,318 SGD
View
2 more retailers have this diamond
Prices start from £653 GBPSave up to £75 GBP

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
0.78ct Cushion
£653 GBP