CaratHunter
Plans
Cushion|Natural|GIA

1.00ct K SI2 Cushion Natural Diamond

EX • K/SI2 • GIA 5553560882

Certificate GIA 5553560882

Diamond specifications and retailer prices

From £587 GBP
As of November 6, 2026
Save £242 GBP (29%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £829 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553560882. Listed at 6 retailers as of November 6, 2026, with prices from £587 to £829, a £242 spread on the same certified stone. GemTrove lists it at £829. 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

1.00
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553560882
Dimensions5.58 × 5.35 × 3.72 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Natural
Top View
5.58 mm5.35 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553560882
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.5%

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: £829 GBP|Low: £527 GBP|High: £829 GBP|Avg: £671 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£587 GBP
Retailer 5£593 GBP
Retailer 3£648 GBP
Retailer 2£660 GBP
Retailer 4£669 GBP
GemTrove£829 GBP

41 data points across 6 retailers

6 retailers£587 GBP to £829 GBP

A
Cheapest Retailer
-
£587 GBP
A
Retailer 2
-
£593 GBP
View
Final sale: no returns
A
Retailer 3
-
£648 GBP
View
A
Retailer 4
-
£660 GBP
View
A
Retailer 5
-
£669 GBP
View
Most Expensive
B+
GemTrove
GT-N-00979333-98 · Nov 6
£829 GBP
A$1,708 AUD
View
5 more retailers have this diamond
Prices start from £587 GBPSave up to £242 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
1.00ct Cushion
£587 GBP