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Cushion|Lab Grown|IGI

17.78ct H VS1 Cushion Lab Grown Diamond

VG • H/VS1 • IGI LG629479691

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG629479691

Diamond specifications and retailer prices

From $12,266 SGD
£7,555 GBP
As of November 1, 2026
Save $34,518 SGD (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $46,785 SGD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 17.78ct lab-grown cushion diamond

This 17.78ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG629479691 or 629479691. Listed at 14 retailers as of October 31, 2026, with prices from $12,266 to $46,785, a $34,518 spread on the same certified stone. Taylor and Hart lists it at $46,785. 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

17.78
Carat
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle31.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629479691
Dimensions14.78 × 14.54 × 9.31 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.78 mm14.54 mm17.78 ctH / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629479691
Side View
Table 64.0%Crown 37.5°Girdle: THK-ETKPavilion 31.6°Culet: NoneDepth 64.0%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $28,874 SGD|Low: $12,262 SGD|High: $46,785 SGD|Avg: $23,309 SGD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
November 1, 2026
Retailer 6$12,266 SGD
Retailer 5$14,045 SGD
Retailer 3$14,746 SGD
Retailer 2$15,085 SGD
Retailer 12$15,273 SGD
Retailer 11$15,370 SGD
Retailer 13$16,300 SGD
Retailer 10$21,798 SGD
Retailer 9$23,642 SGD
Retailer 8$25,516 SGD
Retailer 1$28,874 SGD
Retailer 7$32,804 SGD
Retailer 4$42,552 SGD
Taylor and Hart$46,785 SGD

36 data points across 14 retailers

14 retailers$12,266 SGD to $46,785 SGD

B+
Cheapest Retailer
-
$12,266 SGD
£7,555 GBP
B+
Retailer 2
-
$14,045 SGD
$10,986 USD
View
B+
Retailer 3
-
$14,746 SGD
$11,535 USD
View
Final sale: no returns
B
Retailer 4
-
$15,085 SGD
$11,800 USD
View
Retailer 5
-
$15,273 SGD
$11,947 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$15,370 SGD
$12,023 USD
View
B+
Retailer 7
-
$16,300 SGD
$12,750 USD
View
B
Retailer 8
-
$21,798 SGD
$17,051 USD
View
B
Retailer 9
-
$23,642 SGD
ZAR 298,769 ZAR
View
B
Retailer 10
-
$25,516 SGD
€19,009 EUR
View
B
Retailer 11
-
$28,874 SGD
A$34,748 AUD
View
B
Retailer 12
-
$32,804 SGD
$25,660 USD
View
B
Retailer 13
-
$42,552 SGD
$33,286 USD
View
Most Expensive
B
Taylor and Hart
U0IXM1G · Oct 31
$46,785 SGD
$36,596 USD
View
13 more retailers have this diamond
Prices start from $12,266 SGDSave up to $34,518 SGD

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+
17.78ct Cushion
$12,266 SGD