Cushion|Lab Grown|IGI

0.99ct E VS1 Cushion Lab Grown Diamond

VG • E/VS1 • IGI LG686501524

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG686501524

Diamond specifications and retailer prices

From $158 USD
As of October 30, 2026
Save $1,315 USD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,473 USD at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.99ct lab-grown cushion diamond

This 0.99ct lab-grown cushion sits in the just-under-one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG686501524 or 686501524. Listed at 16 retailers as of October 28, 2026, with prices from $158 to $1,473, a $1,315 spread on the same certified stone. Queensmith lists it at $1,473. 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

0.99
Carat
E
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG686501524
Dimensions6.41 × 5.22 × 3.65 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.41 mm5.22 mm0.99 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG686501524
Side View
Table 64.0%Crown 35.6°Girdle: MED-THKPavilion 37.8°Culet: NoneDepth 69.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $301 USD|Low: $158 USD|High: $831 USD|Avg: $422 USD|+4.6%
Retailer 1
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 2$158 USD
Retailer 8$176 USD
Retailer 1$301 USD
Retailer 5$309 USD
Retailer 7$317 USD
Retailer 6$334 USD
Retailer 4$338 USD
Retailer 12$420 USD
Retailer 11$445 USD
Retailer 10$490 USD
Retailer 3$780 USD
Retailer 9$822 USD

36 data points across 12 retailers

16 retailers$158 USD to $1,473 USD

A
Cheapest Retailer
-
$158 USD
Final sale: no returns
A
Retailer 2
-
$176 USD
View
B+
Retailer 3
-
$238 USD
View
A
Retailer 4
-
$301 USD
£237 GBP
View
A
Retailer 5
-
$309 USD
€294 EUR
View
A
Retailer 6
-
$317 USD
ZAR 5,127 ZAR
View
A
Retailer 7
-
$334 USD
£263 GBP
View
A
Retailer 8
-
$338 USD
View
B+
Retailer 9
-
$420 USD
View
B+
Retailer 10
-
$445 USD
View
Retailer 11
-
$490 USD
View
Price last confirmed 12 days ago
Retailer 12
-
$500 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$620 USD
View
B
Retailer 14
-
$822 USD
£647 GBP
View
B
Retailer 15
-
$1,007 USD
View
Most Expensive
B
Queensmith
LG686501524 · Oct 28
$1,473 USD
£1,160 GBP
View
15 more retailers have this diamond
Prices start from $158 USDSave up to $1,315 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
0.99ct Cushion
$158 USD