CaratHunter
Plans
Cushion|Natural|GIA

0.78ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 7548991202

Certificate GIA 7548991202

Diamond specifications and retailer prices

From £539 GBP
$722 USD
As of October 31, 2026
Save £319 GBP (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £858 GBP at GemTrove · As of November 1, 2026
View at GemTrove

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 7548991202. Listed at 9 retailers as of October 31, 2026, with prices from £539 to £858, a £319 spread on the same certified stone. GemTrove lists it at £858. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7548991202
Dimensions5.14 × 5.11 × 3.43 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
5.14 mm5.11 mm0.78 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7548991202
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 67.1%

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: Oct 31
Current: £858 GBP|Low: £495 GBP|High: £858 GBP|Avg: £708 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 8£539 GBP
Retailer 5£649 GBP
Retailer 7£669 GBP
Retailer 6£673 GBP
Retailer 2£674 GBP
Retailer 3£724 GBP
Retailer 9£724 GBP
Retailer 4£746 GBP
GemTrove£858 GBP

34 data points across 9 retailers

9 retailers£539 GBP to £858 GBP

A
Cheapest Retailer
-
£539 GBP
$722 USD
Final sale: no returns
A
Retailer 2
-
£649 GBP
$870 USD
View
A
Retailer 3
-
£669 GBP
SGD 1,211 SGD
View
A
Retailer 4
-
£673 GBP
$902 USD
View
A
Retailer 5
-
£674 GBP
View
A
Retailer 6
-
£724 GBP
$970 USD
View
A
Retailer 7
-
£724 GBP
$970 USD
View
A
Retailer 8
-
£746 GBP
$1,000 USD
View
Most Expensive
A
GemTrove
GT-N-00957435-98 · Nov 1
£858 GBP
A$1,768 AUD
View
8 more retailers have this diamond
Prices start from £539 GBPSave up to £319 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
£539 GBP