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Cushion|Natural|GIA

0.51ct E SI2 Cushion Natural Diamond

GD • E/SI2 • GIA 1543375815

Certificate GIA 1543375815

Diamond specifications and retailer prices

From $475 AUD
$334 USD
As of October 29, 2026
Save $237 AUD (33%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $712 AUD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1543375815. Listed at 4 retailers as of October 29, 2026, with prices from $475 to $712, a $237 spread on the same certified stone. 77 Diamonds lists it at $712. 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

0.51
Carat
E
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543375815
Dimensions4.71 × 4.44 × 2.93 mm
L/W Ratio1.06
Culet sizeNone
Key to symbols
Crystal
Top View
4.71 mm4.44 mm0.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543375815
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $712 AUD|Low: $414 AUD|High: $810 AUD|Avg: $574 AUD|+6.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2$475 AUD
Retailer 4$502 AUD
Retailer 3$554 AUD
77 Diamonds$712 AUD

41 data points across 4 retailers

4 retailers$475 AUD to $712 AUD

B+
Cheapest Retailer
-
$475 AUD
$334 USD
Final sale: no returns
B+
Retailer 2
-
$502 AUD
MYR 1,436 MYR
View
B+
Retailer 3
-
$554 AUD
$389 USD
View
Most Expensive
B+
77 Diamonds
CUSCPAH8QFQXY · Oct 30
$712 AUD
£394 GBP
View
3 more retailers have this diamond
Prices start from $475 AUDSave up to $237 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+
0.51ct Cushion
$475 AUD