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Heart|Lab Grown|IGI

18.23ct G VS2 Heart Lab Grown Diamond

EX • G/VS2 • IGI LG675574744

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG675574744

Diamond specifications and retailer prices

From $15,286 NZD
£6,772 GBP
As of November 2, 2026
Save $44,467 NZD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $59,752 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 18.23ct lab-grown heart diamond

This 18.23ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG675574744 or 675574744. Listed at 15 retailers as of October 31, 2026, with prices from $15,286 to $59,752, a $44,467 spread on the same certified stone. Taylor and Hart lists it at $59,752. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

18.23
Carat
G
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675574744
Dimensions16.50 × 17.74 × 10.81 mm
L/W Ratio1.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.50 mm17.74 mm18.23 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675574744
Side View
Table 59.0%Crown 39.6°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 60.9%

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: Nov 2
Current: $19,597 NZD|Low: $15,281 NZD|High: $59,752 NZD|Avg: $26,479 NZD|-23.4%
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
Retailer 14
Taylor and Hart
November 2, 2026
Retailer 8$15,286 NZD
Retailer 14$16,408 NZD
Retailer 4$17,064 NZD
Retailer 2$17,588 NZD
Retailer 11$18,830 NZD
Retailer 3$19,033 NZD
Retailer 1$19,597 NZD
Retailer 13$19,701 NZD
Retailer 6$21,697 NZD
Retailer 10$22,012 NZD
Retailer 9$22,816 NZD
Retailer 7$31,725 NZD
Retailer 12$36,479 NZD
Retailer 5$48,467 NZD
Taylor and Hart$59,752 NZD

37 data points across 15 retailers

15 retailers$15,286 NZD to $59,752 NZD

A
Cheapest Retailer
-
$15,286 NZD
£6,772 GBP
A
Retailer 2
-
$16,408 NZD
$9,232 USD
View
B+
Retailer 3
-
$17,064 NZD
$9,601 USD
View
B+
Retailer 4
-
$17,588 NZD
$9,896 USD
View
B+
Retailer 5
-
$18,830 NZD
$10,595 USD
View
B+
Retailer 6
-
$19,033 NZD
$10,709 USD
View
B+
Retailer 7
-
$19,597 NZD
$11,026 USD
View
B+
Retailer 8
-
$19,701 NZD
HK$86,600 HKD
View
Retailer 9
-
$21,697 NZD
$12,208 USD
View
Price last confirmed 21 days ago
Retailer 10
-
$22,012 NZD
$12,385 USD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
$22,816 NZD
£10,108 GBP
View
B
Retailer 12
-
$31,725 NZD
€17,000 EUR
View
B
Retailer 13
-
$36,479 NZD
$20,525 USD
View
B
Retailer 14
-
$48,467 NZD
$27,270 USD
View
Most Expensive
B
Taylor and Hart
I9V68JZ · Oct 31
$59,752 NZD
$33,620 USD
View
14 more retailers have this diamond
Prices start from $15,286 NZDSave up to $44,467 NZD

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
18.23ct Heart
$15,286 NZD