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Cushion|Natural|GIA

1.70ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 1555659962

Certificate GIA 1555659962

Diamond specifications and retailer prices

From $9,128 AUD
HK$50,100 HKD
As of October 30, 2026
Save $8,913 AUD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $18,041 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555659962. Listed at 15 retailers as of October 28, 2026, with prices from $9,128 to $18,041, a $8,913 spread on the same certified stone. Queensmith lists it at $18,041. 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

1.70
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555659962
Dimensions7.94 × 6.11 × 4.17 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity, Feather, Needle, Indented Natural, Natural
Top View
7.94 mm6.11 mm1.70 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555659962
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.1%

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 30
Current: $18,041 AUD|Low: $9,128 AUD|High: $18,213 AUD|Avg: $12,768 AUD|+1.6%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$9,128 AUD
Retailer 2$9,771 AUD
Retailer 4$10,887 AUD
Retailer 12$11,307 AUD
Retailer 7$11,309 AUD
Retailer 6$11,414 AUD
Retailer 5$11,579 AUD
Retailer 3$12,516 AUD
Retailer 11$12,663 AUD
Retailer 9$13,366 AUD
Retailer 8$17,166 AUD
Queensmith$18,041 AUD

24 data points across 12 retailers

15 retailers$9,128 AUD to $18,041 AUD

A
Cheapest Retailer
-
$9,128 AUD
HK$50,100 HKD
A
Retailer 2
-
$9,771 AUD
₹653,749 INR
View
Retailer 3
-
$10,610 AUD
SGD 10,073 SGD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
$10,887 AUD
SGD 10,336 SGD
View
B+
Retailer 5
-
$11,219 AUD
$7,882 USD
View
B+
Retailer 6
-
$11,307 AUD
$7,944 USD
View
Final sale: no returns
B+
Retailer 7
-
$11,309 AUD
$7,945 USD
View
B+
Retailer 8
-
$11,414 AUD
£6,314 GBP
View
B+
Retailer 9
-
$11,579 AUD
£6,405 GBP
View
B+
Retailer 10
-
$12,516 AUD
$8,793 USD
View
B+
Retailer 11
-
$12,663 AUD
$8,896 USD
View
B+
Retailer 12
-
$12,674 AUD
View
B+
Retailer 13
-
$13,366 AUD
€8,943 EUR
View
B
Retailer 14
-
$17,166 AUD
£9,496 GBP
View
Most Expensive
B
Queensmith
1555659962 · Oct 28
$18,041 AUD
£9,980 GBP
View
14 more retailers have this diamond
Prices start from $9,128 AUDSave up to $8,913 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.

A
1.70ct Cushion
$9,128 AUD