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Cushion|Natural|GIA

1.70ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 2558551556

Certificate GIA 2558551556

Diamond specifications and retailer prices

From $5,363 USD
HK$41,900 HKD
As of October 30, 2026
Save $6,168 USD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,532 USD 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 2558551556. Listed at 15 retailers as of October 28, 2026, with prices from $5,363 to $11,532, a $6,168 spread on the same certified stone. Queensmith lists it at $11,532. 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
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558551556
Dimensions7.88 × 6.07 × 4.22 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity, Feather, Cloud, Needle
Top View
7.88 mm6.07 mm1.70 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558551556
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.4%

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: $11,532 USD|Low: $5,363 USD|High: $11,608 USD|Avg: $7,496 USD|+2.1%
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$5,363 USD
Retailer 2$5,765 USD
Retailer 4$6,368 USD
Retailer 12$6,656 USD
Retailer 9$6,657 USD
Retailer 5$6,816 USD
Retailer 6$6,916 USD
Retailer 3$7,374 USD
Retailer 11$7,491 USD
Retailer 7$7,868 USD
Retailer 8$10,065 USD
Queensmith$11,532 USD

25 data points across 12 retailers

15 retailers$5,363 USD to $11,532 USD

A
Cheapest Retailer
-
$5,363 USD
HK$41,900 HKD
A
Retailer 2
-
$5,765 USD
₹549,001 INR
View
Retailer 3
-
$6,206 USD
SGD 8,387 SGD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$6,368 USD
SGD 8,606 SGD
View
B+
Retailer 5
-
$6,621 USD
View
B+
Retailer 6
-
$6,656 USD
View
Final sale: no returns
B+
Retailer 7
-
$6,657 USD
View
A
Retailer 8
-
$6,816 USD
£5,367 GBP
View
A
Retailer 9
-
$6,916 USD
£5,445 GBP
View
B+
Retailer 10
-
$7,374 USD
View
B+
Retailer 11
-
$7,454 USD
A$11,468 AUD
View
B+
Retailer 12
-
$7,491 USD
View
B+
Retailer 13
-
$7,868 USD
€7,493 EUR
View
B+
Retailer 14
-
$10,065 USD
£7,925 GBP
View
Most Expensive
B
Queensmith
2558551556 · Oct 28
$11,532 USD
£9,080 GBP
View
14 more retailers have this diamond
Prices start from $5,363 USDSave up to $6,168 USD

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
$5,363 USD