Cushion|Natural|GIA

1.80ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2426704822

Certificate GIA 2426704822

Diamond specifications and retailer prices

From $4,974 USD
As of November 5, 2026
Save $565 USD (10%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,539 USD at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.8ct natural cushion diamond

This 1.8ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2426704822. Listed at 2 retailers as of November 5, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.80
Carat
K
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2426704822
Dimensions6.78 × 6.42 × 4.83 mm
L/W Ratio1.06
Top View
6.78 mm6.42 mm1.80 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2426704822
Side View
Table 59.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 75.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $4,974 USD|Low: $4,974 USD|High: $5,599 USD|Avg: $5,360 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 6, 2026
Retailer 1$4,974 USD
Retailer 2$5,389 USD
Retailer 3$5,463 USD
Yorxs$5,539 USD

18 data points across 4 retailers

2 retailers$4,974 USD to $5,539 USD

B
Cheapest Retailer
-
$4,974 USD
Most Expensive
B
Yorxs
227993512 · Nov 6
$5,539 USD
€5,275 EUR
View
1 more retailer has this diamond
Prices start from $4,974 USDSave up to $565 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.

B
1.80ct Cushion
$4,974 USD