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Cushion|Natural|GIA

4.02ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 5186144501

Certificate GIA 5186144501

Diamond specifications and retailer prices

From $48,974 AUD
As of November 1, 2026
Save $39,324 AUD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $88,298 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 4.02ct natural cushion diamond

This 4.02ct natural cushion sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5186144501. Listed at 13 retailers as of November 1, 2026, with prices from $48,974 to $88,298, a $39,324 spread on the same certified stone. MOH London lists it at $88,298. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.02
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5186144501
Dimensions9.13 × 8.78 × 5.92 mm
L/W Ratio1.04
Top View
9.13 mm8.78 mm4.02 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5186144501
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.2%

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 1
Current: $88,298 AUD|Low: $48,974 AUD|High: $89,601 AUD|Avg: $62,452 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$48,974 AUD
Retailer 2$50,837 AUD
Retailer 5$56,568 AUD
Retailer 7$56,689 AUD
Retailer 3$66,363 AUD
Retailer 4$70,548 AUD
MOH London$88,298 AUD

35 data points across 7 retailers

13 retailers$48,974 AUD to $88,298 AUD

B+
Cheapest Retailer
-
$48,974 AUD
B+
Retailer 2
-
$50,837 AUD
View
B+
Retailer 3
-
$51,611 AUD
View
B+
Retailer 4
-
$53,109 AUD
View
B+
Retailer 5
-
$54,992 AUD
View
B+
Retailer 6
-
$56,568 AUD
View
Retailer 7
-
$56,689 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$56,941 AUD
View
B+
Retailer 9
-
$57,161 AUD
View
B
Retailer 10
-
$61,766 AUD
View
B
Retailer 11
-
$66,363 AUD
View
B
Retailer 12
-
$70,548 AUD
View
Most Expensive
B
MOH London
01873AC53 · Nov 4
$88,298 AUD
£47,771 GBP
View
12 more retailers have this diamond
Prices start from $48,974 AUDSave up to $39,324 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+
4.02ct Cushion
$48,974 AUD